Strand tension device



Dec. 18, 1956 A. F. PIEPER I 2,774,550

STRAND TENSION DEVICE Filed Aug. 15, 1955 INVENTOR. W 2 ALPHONSE EPIEPER HIS 7708MB United States PatentQ i ce STRAND TENSION DEVICEAlphonse F. Pieper, Brighton, Y. Application August 15 1955, SerialfNo.528,314

4 Claims. (Cl. 242-154) This invention relates to a strand tensiondevice, with more particular reference to the type of construction inwhich a pair of guide arms or posts of refractory material are mountedin a holder which is rotatable to vary the tension exerted on the yarnor strands traveling between and over the guide arms, and has for itspurpose to afford a simple, practical, and efficient means for securingthe guide arms in the holder.

More specifically, the invention is intended to provide removable guidearms that can be inserted into a metal or other holder and held securelyin position for proper functioning in the machine.

Much difiiculty has been experienced in attaching removable arms ofrefractory material securely in a holder, and an additional purpose ofthe invention is to provide means particularly adaptable for use withremovable guide arms or posts formed of refractory or ceramic materialbaked at high temperatures, which can be fastened rigidly in the holderand securely held without danger of fracturing or damaging the ceramicarms.

To these and other ends, the invention consists in the construction andarrangement of parts that will appear clearly from the followingdescription when read in conjunction with the accompanying drawings, thenovel features being pointed out in the claims following thespecification.

In the drawings:

Fig. l is a plan view showing a preferred embodiment of the invention;

Fig. 2 is a view in end elevation;

Fig. 3 is a sectional view on line 3-3 of Fig, 2 looking in thedirection indicated; 7

Fig. 4 is a sectional view on line 44 of Fig. 1, looking in thedirection indicated, and

Fig. is a sectional view on the line 5-5 of Fig. 1, looking in thedirection indicated.

The invention has to do more particularly with means for detachablyfastening ceramic or refractory arms or posts in a holder for use in astrand tensioning mechanism and is intended to permit posts of the typementioned to be secured tightly in a metal or other holder,

and easily removed for replacement if necessary.

Referring more particularly to the drawings in which like referencenumerals refer to the same parts throughout the several views, 1designates a metal or other holder having a reduced neck portion 2 bywhich it is mounted on a supporting plate, as shown in the abovementioned pending application, the holder 1 being provided with a pairof cylindrical openings to receive the cylindrical guide arms or posts 3and 4 which are constructed of refractory or ceramic material of suchhardness as to resist wear from the strands or yarn passing continuouslythereover.

The body of the holder 1 is provided with another cylindrical opening 5extending therethrough perpendicularly or transversely to the posts 3and 4 and to the openings in which they are mounted, the opening 5 in-'tersecting partially the openings in which the cylindrical posts 3 and 4are positioned so that the latter when arranged in theholder extendpartially into the opening 5, as appears in Fig. 5.

The opening 5 is threaded at one end as indicated at 6 to receive athreaded plug 7 that has a cup-shaped inner'end 8 for engagement withthe convex outer end 9 of a tapered pin 10 which is preferably formed ofnylon, but may be of other suitable plastic or slightly elastic orcompressible material, such that when forced inwardly between the convexsurfaces of the refractory posts 3 and 4, the nylon tapered pin engagesthe adjacent surfaces of the cylindrical arms 3 and 4 and forces themtightly against the surrounding surfaces of the holder and thus securesthem rigidly in the holder.

The tapered pin 10 extended transversely of the cylindrical arms 3 and4, and its convex periphery engages the convex peripheries of thecontacting arms 3 and 4 in perpendicular relation thereto, the surfaceof the tapered pin being slightly indented by the pressure against thearms, and the nylon pin is retained in rigid engagement against theceramic arms by the threaded plug 7, the inner end of which overlies andengages the convex outer end of the nylon tapered pin.

In assembling and fastening the ceramic arms in place, they are insertedinto the cylindrical openings in the metal holder in the positionsillustrated in Fig. 3, preferably with the threaded end of the opening 5on top, and held while the tapered pin is inserted into the opening withits small end entering between the adjacent surfaces of the ceramicarms, after which the plug 7 is threaded into the opening 5 until itforces the tapered pin downwardly into tight engagement with the ceramicarms, which are thus held securely against the surrounding walls of theholder, and cannot be removed until the threaded plug 7 is loosened topermit removal of the tapered nylon pin.

In this manner the ceramic arms are held securely in the metal holderwithout danger of fracturing or damaging, and can be quickly removed atany time if required for replacement. The ceramic arms can be producedin any degreeof hardness and instantly assembled in the holder. in amanner that protects them effectively against accidental breakage ordamage due to their attachment to the holder.

While the inventionhas been described in its relation to the particularconstruction shown, it is not confined in this respect, and thisapplication is intended to cover any modifications or departures comingwithin the purposes of the improvement or the scope of the followingclaims. I

I claim: p

1. In a strand tensioning means, a support including a pair of spacedparallel cylindrical openings and a pair of cylindrical arms ofrefractory material removably positioned in said openings, said supporthaving another opening located between and transversely of and partiallyintersecting the first mentioned openings, a'tapered nylon 'pinremovably positioned in said other opening engaging the peripheries ofsaid arms, and a threaded plug in said other opening engaging the nylonpin and acting to force the pin against said arms.

2. In a strand tensioning means, a support including a pair of spacedparallel cylindrical openings and a pair of cylindrical arms ofrefractory material removably positioned in said openings, said supporthaving another opening located between and transversely of and partiallyintersecting the first mentioned openings, a tapered pin of slightlyelastic material removably positioned in said other opening engaging theperipheries of said arms, and

Patented Dec. 18, 1956,

fastening means in said other opening engaging the elastic pin andacting to force it against said arms.

3. In a strand tensioning means, a support including a pair of spacedparallel cylindrical openings and a pair of cylindrical membersremovably positioned in said openings, said support having anotheropening located between and transversely of and partially intersectingthe first mentioned openings, a tapered pin removably positioned in saidother opening engaging the peripheries of said cylindrical members, andfastening means in said other opening engaging said tapered pin andacting to force it against said cylindrical members.

4.- In a strand tensioning means, a support including a pair of spacedparallel cylindrical openings and a pair of cylindrical membersremovably positioned in said opening, said support having anotheropening located between and transversely of and partially intersectingthe first mentioned openings, and a tapered pin removably positioned insaid other opening and lockingly engaging the adjacent surfaces of saidcylindrical members.

References Cited in the file of this patent UNITED STATES PATENTS806,555 Mitchell 5. Dec. 5, 1905 838,046 McKean Dec. 11, 1906 1,459,332Hineline June 19, 1923

